Formerly associated with the prestigious Sree Chitra Tirunal Institute for Medical Sciences and Technology (SCTIMST), Thiruvananthapuram, he is a skilled pediatric echocardiographer known for precise pre- and post-operative assessments.

Dr. Venkateshwaran has performed over 150 fetal echocardiograms, confirmed with accurate postnatal findings, and more than 500 pediatric interventional catheterization procedures as the primary operator. With an impressive record of over 1,000 percutaneous device closures in both children and adults, he continues to set benchmarks in pediatric cardiac care.